John Vinson and others have been transforming a field into a memorial for nearly two decades to remember the Sept. 11 attacks on the United States.Family, friends and volunteers put thousands of flags into the ground, representing 2,977 people killed during the 2001 massacre that involved terrorists hijacking and flying commercial planes with passengers into the Twin Towers in New York and the Pentagon near Washington.Passengers stopped one of the planes, United 93, before it could attack the U.S. Capitol or White House, causing it to crash in Pennsylvania."But when you actually see a flag represent one person out of 2,977," Vinson said, "It gives the — kind of a concept of how many people really lost their lives that day."Tap the video above for more details on how people there and across the world have used the memorial to reflect on the tragedy.

WEST SACRAMENTO, Calif. —

John Vinson and others have been transforming a field into a memorial for nearly two decades to remember the Sept. 11 attacks on the United States.

Advertisement

Family, friends and volunteers put thousands of flags into the ground, representing 2,977 people killed during the 2001 massacre that involved terrorists hijacking and flying commercial planes with passengers into the Twin Towers in New York and the Pentagon near Washington.

Passengers stopped one of the planes, United 93, before it could attack the U.S. Capitol or White House, causing it to crash in Pennsylvania.

"But when you actually see a flag represent one person out of 2,977," Vinson said, "It gives the — kind of a concept of how many people really lost their lives that day."

Tap the video above for more details on how people there and across the world have used the memorial to reflect on the tragedy.